Cinchomeronic acid → 1H,3H-furo(3,4-c)pyridine-1,3-dione

Beteiligte Stoffe

Reaktionsschritte

A mixture of pyridine 3,4-dicarboxylic acid (15.0 g) and acetic anhydride (30 mL) is refluxed for two hours. The excess acetic anhydride is removed by distillation and the anhydride is collected and purified by sublimation (123° C. at 3 mm Hg) to yield pyridine 3,4-dicarboxylic acid anhydride as a white solid (10.1 g).

Herkunft & Nachweise